Dextro rhymes with:
astro, austro, belcastro, bistro, buenrostro, castro, decastro, delmastro, disilvestro, gastro, haberstroh, locastro, maestro, magistro, mastro, nicastro, paternostro, policastro, silvestro, verrastro, yastrow, zastrow
Dextro sounds like:
daughter, daughtery, daughtrey, daughtry, dauster, decastro, decatur, decoder, decoster, decter, degutare, desiderio, destroy, destroyer, detector, dexter, dextra, dichter, dictator, digester, disaster, dockstader, dockter, doctor, doktor, doster, doxtater, duster, dykstra